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NJM3770AD3 Datasheet Stepper Motor Driver

Manufacturer: New Japan Radio

Overview: NJM3770A STEPPER MOTOR DRIVER s GENERAL.

This datasheet includes multiple variants, all published together in a single manufacturer document.

General Description

NJM3770A is a stepper motor driver, which consists of a LS-TTL compatible logic input stage, a current sensor, a monostable multivibrator and a high power H-bridge output stage.

The NJM3770A is a high power version and pincompatible with the NJM3717.Two NJM3770A and a small number of external components form a complete control and drive unit stepper motor systems.

s EATURES • Half-step and full-step operation • Switched mode bipolar constant current drive • Wide range of current control 5 -1800 mA • Wide voltage range 10 - 45 V • Thermal overload protection • Packages DIP16 (Batwing) / PLCC28 / EMP20 s PACKAGE OUTLINE NJM3770AD3 NJM3770AE2 NJM3770AFM2 s BLOCK DIAGRAM Phase I 1 I0 VR GND VCC VMM VMM Schmitt Trigger Time Delay 1 ≥1 ≥1 MA MB &&&& ≥1 ≥1 + – + – + – Current Sensor C Output Stage Monostable toff = 0.69 • RT • CT T E NJM3770A Figure 1.

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